But that kind of policy will eventually backfire, since doctors are free to move to whatever state they want once they finish their residencies. If Maryland forces them to accept insurance that doesn't reimburse them at a rate that they find acceptable, they'll go work in another state and Maryland will have a shortage of doctors. And doctors who are already practicing in Maryland will retire early or move into research, or some other job that doesn't involve seeing patients (like consulting for medical software companies).